我们今年的产量是2002年的四倍。
This year we produced quadruple the amount produced in 2002.
大米、鸡蛋、卷心菜等主食的价格在一些地区翻了一番甚至四倍。
The price of staple foods such as rice, eggs, cabbages have doubled and even quadrupled in some areas.
过去几年中销售量较原来的增加了四倍。
过去五年中，销售额已增长至以前的四倍。
这座城市的空气污染程度曾高达可接受标准的四倍。
Air pollution in the city had reached four times the acceptable levels.
这个书包是那个书包的四倍重。
她的研究表明，人在跑步时，脚每次着地对地面的压力相当于自身体重的四倍，而竞走者不完全离开地面，其每步的压力只有自身体重的1.4倍。
According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, who do not leave the ground, create only about 1.4 times their body weight with each step.
司机开车使用手机时撞车的可能性是平时的四倍。
A driver is four times more likely to crash while using a mobile phone.
在本世纪末，实现工农业总产值增四倍的目标是完全可能的。
It is entirely possible to achieve the goal of quadrupling the gross annual value of industrial and agricultural production by the end of the century.
事实证明，生活在溪边栖息地的鸟对数量是远离溪边栖息地的四倍。
It turned out that there were actually four times as many bird pairs or couples living in the stream edge habitat compared to the area away from the stream.
研究发现，城市树木的碳循环速度和生长速度几乎是乡村树木的四倍。
It was discovered that rates of carbon cycling and growth rates among city trees were nearly four times faster than those in the countryside.
相反，刚从大学毕业的化学工程师的工资几乎是入门级高中毕业生的四倍。
Conversely, chemical engineers straight out of school can easily make almost four times the wages of an entry-level high-school graduate.
超市的商品种类比以往任何时候都多，并且美国农贸市场的数量是二十年前的四倍多。
Supermarkets offer more variety than ever, and there are over four times as many farmers' markets in the U.S. as there were 20 years ago.
玛雅故土的降雨量在不同年份是变化莫测的；最近几年的降雨量比其他年份多三到四倍。
Rainfall in the Maya homeland is unpredictably variable between years; some recent years have had three or four times more rain than other years.
那些在研究开始后一个月内就开始吸烟的人在研究结束时抑郁的可能性是那些没有开始吸烟的人的四倍。
Those who began smoking within a month of the study's start were four times as likely to be depressed at the study's end than those who did not begin smoking.
四倍体是指在细胞顶部包含4组染色体的细胞。
Tetraploidy means cells containing 4 sets of chromosomes atop.
牛肉的生产也降了近四倍。
最终数据曾几次达到最初报告数据的四倍。
Several times, the final figure was quadruple what was first reported.
员工收益却是股东利润的四倍。
Staff got four times as much as shareholders did in profits.
危地马拉的肥胖人口比例在30年间翻了四倍。
股票价格几乎是2003年初的四倍。
Share prices are almost four times their level in early 2003.
合同价格是原来的四倍，达到100美元/每吨。
过去25年，美国人的普遍肥胖已经增加了四倍。
The prevalence of obesity among American boys and girls has quadrupled over the past 25 years.
一瓶20升的劣质水的价格已经涨了四倍。
A 20-litre jerrycan of poor quality water has quadrupled in price.
然而，月球地壳几乎是地球地壳厚度的四倍。
However, the crust is almost four times thicker than the earth's crust.
在中国，出货量的增长速度接近美国的四倍。
In China, shipments are growing nearly four times as fast as in America.
但是，美国的人均排放量仍然是中国的四倍。
However, America’s emissions per person are still more than four times China’s.
若无补助，太阳能的成本是煤碳电能的四倍。
Without subsidies, solar is about four times more expensive than energy from the coal-powered grid.
同样的体积，天然气储存的能量是煤炭的四倍。
Pound-for-pound, gas possesses four times as much energy as coal.
但是当巧匠们接手之后，蒸汽机的效率一下子变成了四倍。
But when the tweakers took over the efficiency of the steam engine swiftly quadrupled.
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